- Step 3.5 Flash — $0.24 sample workload
- Step 3.7 Flash — $0.77 sample workload
StepFun LLM API Models & Pricing
Browse StepFun LLM API models with normalized prompt pricing, output pricing, context windows, release dates, and popularity signals.
2Models tracked
2Priced models
2Popular models
1Latest releases
Provider shortlist
Use StepFun as a model-level shortlist, not a single default choice.
Start from the cost, context, and popularity picks below, then open the model pages or head-to-head comparisons before choosing an API.
Cost pick
Step 3.5 Flash
$0.24 sample workload
Context pick
Step 3.5 Flash
262.14K context window
Popular pick
Step 3.7 Flash
#11 popularity signal
When to avoid
Verify model fit
Do not choose by provider name alone. Compare model-level input price, output price, context window, release timing, and current availability before production use.
- Step 3.5 Flash — 262.14K
- Step 3.7 Flash — 256K
StepFun comparisons
Search StepFun comparisons| Comparison | Sample Cost Winner | Larger Context | Newest Release |
|---|---|---|---|
| 🔥Claude Opus 4.7 vs New🔥Step 3.7 Flash | Step 3.7 Flash | Claude Opus 4.7 | |
| 🔥Claude Sonnet 4.6 vs New🔥Step 3.7 Flash | Step 3.7 Flash | Claude Sonnet 4.6 | |
| 🔥DeepSeek V3.2 vs New🔥Step 3.7 Flash | DeepSeek V3.2 | Step 3.7 Flash | |
| 🔥DeepSeek V4 Flash vs New🔥Step 3.7 Flash | DeepSeek V4 Flash | DeepSeek V4 Flash | |
| 🔥DeepSeek V4 Pro vs New🔥Step 3.7 Flash | Step 3.7 Flash | DeepSeek V4 Pro | |
| 🔥Gemini 3 Flash Preview vs New🔥Step 3.7 Flash | Step 3.7 Flash | Gemini 3 Flash Preview | |
| 🔥Hy3 preview vs New🔥Step 3.7 Flash | Hy3 preview | Hy3 preview | |
| 🔥MiMo-V2.5 vs New🔥Step 3.7 Flash | MiMo-V2.5 | MiMo-V2.5 |
Cross-Provider Alternatives
Open alternatives hubUse this shortlist when StepFun is not a hard requirement and your first constraint is workload cost.
| Alternative | Provider | Sample Cost | Input / 1M | Output / 1M | Context |
|---|---|---|---|---|---|
| 🔥Owl Alpha | OpenRouter | $0 | $0 | $0 | 1.05M |
| New🔥Nemotron 3 Ultra (free) | NVIDIA | $0 | $0 | $0 | 1M |
| 🔥Laguna M.1 (free) | Poolside | $0 | $0 | $0 | 262.14K |
| Nemotron 3 Super (free) | NVIDIA | $0 | $0 | $0 | 1M |
| gpt-oss-120b (free) | OpenAI | $0 | $0 | $0 | 131.07K |
| Laguna XS.2 (free) | Poolside | $0 | $0 | $0 | 262.14K |
StepFun model catalog
Browse all models| Model | Prompt | Output | Context | Popularity |
|---|---|---|---|---|
| New🔥Step 3.7 Flash | $0.2 | $1.15 | 256K | #11 |
| Step 3.5 Flash | $0.09 | $0.3 | 262.14K | #102 |